$50NL- Standard fold with Q's on river?

[slimon]

Full Tilt Poker, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LeggoPoker Hand History Converter

MP: $110.10
CO: $48.60
BTN: $62.20
Hero (SB): $50
BB: $34.10
UTG: $145.85

Pre-Flop: Q[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/heart.gif[/img] dealt to Hero (SB)
2 folds, CO calls $0.50, BTN folds, <font color="red">Hero raises to $2.25</font>, BB folds, CO calls $1.75

Flop: ($5) T[img]/images/graemlins/diamond.gif[/img] 6[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero bets $3.50</font>, CO calls $3.50

Turn: ($12) T[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">Hero bets $7</font>, CO calls $7

River: ($26) 8[img]/images/graemlins/heart.gif[/img] (2 Players)
Hero checks, <font color="red">CO bets $20</font>, Hero folds

Results: $26 Pot ($1.30 Rake)
CO mucked and WON $24.70 (+$11.95 NET)

Villian is 47/19 over 60 hands.
I think I should of bet more on the flop. On the turn he could have a 10 but he could also have a straight or a flush draw. I should of bet like 9 on the turn or check for pot control? For the river his flush missed but his straight hit if he has 54 or he already has it. He could have a set. Is he bluffing me or he's telling me I'm beat with his huge bet size on the river?